1#
2# i386/Makefile
3#
4# This file is included by the global makefile so that you can add your own
5# architecture-specific flags and dependencies. Remember to do have actions
6# for "archclean" cleaning up for this architecture.
7#
8# This file is subject to the terms and conditions of the GNU General Public
9# License.  See the file "COPYING" in the main directory of this archive
10# for more details.
11#
12# Copyright (C) 1994 by Linus Torvalds
13#
14# 19990713  Artur Skawina <skawina@geocities.com>
15#           Added '-march' and '-mpreferred-stack-boundary' support
16#
17# 20050320  Kianusch Sayah Karadji <kianusch@sk-tech.net>
18#           Added support for GEODE CPU
19
20HAS_BIARCH      := $(call cc-option-yn, -m32)
21ifeq ($(HAS_BIARCH),y)
22AS              := $(AS) --32
23LD              := $(LD) -m elf_i386
24CC              := $(CC) -m32
25endif
26
27LDFLAGS		:= -m elf_i386
28OBJCOPYFLAGS	:= -O binary -R .note -R .comment -S
29ifdef CONFIG_RELOCATABLE
30LDFLAGS_vmlinux := --emit-relocs
31endif
32CHECKFLAGS	+= -D__i386__
33
34CFLAGS += -pipe -msoft-float -mregparm=3 -freg-struct-return
35
36# prevent gcc from keeping the stack 16 byte aligned
37CFLAGS += $(call cc-option,-mpreferred-stack-boundary=2)
38
39# CPU-specific tuning. Anything which can be shared with UML should go here.
40include $(srctree)/arch/i386/Makefile.cpu
41
42# temporary until string.h is fixed
43cflags-y += -ffreestanding
44
45# this works around some issues with generating unwind tables in older gccs
46# newer gccs do it by default
47cflags-y += -maccumulate-outgoing-args
48
49# Disable unit-at-a-time mode on pre-gcc-4.0 compilers, it makes gcc use
50# a lot more stack due to the lack of sharing of stacklots:
51CFLAGS				+= $(shell if [ $(call cc-version) -lt 0400 ] ; then echo $(call cc-option,-fno-unit-at-a-time); fi ;)
52
53# do binutils support CFI?
54cflags-y += $(call as-instr,.cfi_startproc\n.cfi_endproc,-DCONFIG_AS_CFI=1,)
55AFLAGS += $(call as-instr,.cfi_startproc\n.cfi_endproc,-DCONFIG_AS_CFI=1,)
56
57# is .cfi_signal_frame supported too?
58cflags-y += $(call as-instr,.cfi_startproc\n.cfi_signal_frame\n.cfi_endproc,-DCONFIG_AS_CFI_SIGNAL_FRAME=1,)
59AFLAGS += $(call as-instr,.cfi_startproc\n.cfi_signal_frame\n.cfi_endproc,-DCONFIG_AS_CFI_SIGNAL_FRAME=1,)
60
61CFLAGS += $(cflags-y)
62
63# Default subarch .c files
64mcore-y  := mach-default
65
66# Voyager subarch support
67mflags-$(CONFIG_X86_VOYAGER)	:= -Iinclude/asm-i386/mach-voyager
68mcore-$(CONFIG_X86_VOYAGER)	:= mach-voyager
69
70# VISWS subarch support
71mflags-$(CONFIG_X86_VISWS)	:= -Iinclude/asm-i386/mach-visws
72mcore-$(CONFIG_X86_VISWS)	:= mach-visws
73
74# NUMAQ subarch support
75mflags-$(CONFIG_X86_NUMAQ)	:= -Iinclude/asm-i386/mach-numaq
76mcore-$(CONFIG_X86_NUMAQ)	:= mach-default
77
78# BIGSMP subarch support
79mflags-$(CONFIG_X86_BIGSMP)	:= -Iinclude/asm-i386/mach-bigsmp
80mcore-$(CONFIG_X86_BIGSMP)	:= mach-default
81
82#Summit subarch support
83mflags-$(CONFIG_X86_SUMMIT) := -Iinclude/asm-i386/mach-summit
84mcore-$(CONFIG_X86_SUMMIT)  := mach-default
85
86# generic subarchitecture
87mflags-$(CONFIG_X86_GENERICARCH) := -Iinclude/asm-i386/mach-generic
88mcore-$(CONFIG_X86_GENERICARCH) := mach-default
89core-$(CONFIG_X86_GENERICARCH) += arch/i386/mach-generic/
90
91# ES7000 subarch support
92mflags-$(CONFIG_X86_ES7000)	:= -Iinclude/asm-i386/mach-es7000
93mcore-$(CONFIG_X86_ES7000)	:= mach-default
94core-$(CONFIG_X86_ES7000)	:= arch/i386/mach-es7000/
95
96# default subarch .h files
97mflags-y += -Iinclude/asm-i386/mach-default
98
99head-y := arch/i386/kernel/head.o arch/i386/kernel/init_task.o
100
101libs-y 					+= arch/i386/lib/
102core-y					+= arch/i386/kernel/ \
103					   arch/i386/mm/ \
104					   arch/i386/$(mcore-y)/ \
105					   arch/i386/crypto/
106drivers-$(CONFIG_MATH_EMULATION)	+= arch/i386/math-emu/
107drivers-$(CONFIG_PCI)			+= arch/i386/pci/
108# must be linked after kernel/
109drivers-$(CONFIG_OPROFILE)		+= arch/i386/oprofile/
110drivers-$(CONFIG_PM)			+= arch/i386/power/
111
112CFLAGS += $(mflags-y)
113AFLAGS += $(mflags-y)
114
115boot := arch/i386/boot
116
117PHONY += zImage bzImage compressed zlilo bzlilo \
118         zdisk bzdisk fdimage fdimage144 fdimage288 isoimage install
119
120all: bzImage
121
122# KBUILD_IMAGE specify target image being built
123                    KBUILD_IMAGE := $(boot)/bzImage
124zImage zlilo zdisk: KBUILD_IMAGE := arch/i386/boot/zImage
125
126zImage bzImage: vmlinux
127	$(Q)$(MAKE) $(build)=$(boot) $(KBUILD_IMAGE)
128
129compressed: zImage
130
131zlilo bzlilo: vmlinux
132	$(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) zlilo
133
134zdisk bzdisk: vmlinux
135	$(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) zdisk
136
137fdimage fdimage144 fdimage288 isoimage: vmlinux
138	$(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) $@
139
140install:
141	$(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) install
142
143archclean:
144	$(Q)$(MAKE) $(clean)=arch/i386/boot
145
146define archhelp
147  echo  '* bzImage	- Compressed kernel image (arch/$(ARCH)/boot/bzImage)'
148  echo  '  install	- Install kernel using'
149  echo  '		   (your) ~/bin/installkernel or'
150  echo  '		   (distribution) /sbin/installkernel or'
151  echo  '		   install to $$(INSTALL_PATH) and run lilo'
152  echo  '  bzdisk       - Create a boot floppy in /dev/fd0'
153  echo  '  fdimage      - Create a boot floppy image'
154  echo  '  isoimage     - Create a boot CD-ROM image'
155endef
156
157CLEAN_FILES += arch/$(ARCH)/boot/fdimage \
158	       arch/$(ARCH)/boot/image.iso \
159	       arch/$(ARCH)/boot/mtools.conf
160